Self-measuring barrel pump



June 29` 1926.

G. U. BRAKE SELF MEASURING BARREL PUMP 2 Sheets-Sheet 1 Filed July 1'7.1922 .June 2'9 ,1926. 1,590,805

vG. U. BRAKE SELF MEASURING BARREL PUMP Filed July 1'7, 1922 2Sheets-Sheet 2 Patented June 29, 1926.

UNITED STATES l y 1,590,805 PATENT OFFICE.

GEORGE U. BRAKE, OF FGRT WAYNE, INDIANA, ASSIGNOR- TOV TOK-IEIM OIL TANKAND PUMP `001V!EF1-HQE', A CORPORATIQN 0F INDIANA.

snLr-Mnasunne BARREL PUMP.

Application filed J'uly` 17, 1922. Serial No. 575,555.

This invention relates to improvements in self measuring barrel pumpsadapted for Idispensing oil, especially thicklubricating oil. The objectof the inventionv is to `provide in a pump of its class a valve :tor itspiston head which will be positively opened and closed as the pistonheadis actuated 1n correspondingly opposite directions.

Ordinarily, where a valvular piston is employed in a pump, the valve isseated and unseated during the operation of the piston by the pressureof the transient liquid contained in the pump cylinder beneath or abovethe piston according to the direction of movement of the piston, theaction of the valve being ydependent upon movement of the piston head.The present invention contemplates the positive opening and closing ofthe valve in the piston head by the actuating mechanism for operatingthe piston head, and thus insure a more accurate measurement of theliquid dispensed by the pump.

The object of the invention is accomplished by the constructionillustrated in the accompanying drawings, in which Fig. 1 is a frontelevation of a pump embodymg the invention, a portion of the view beingbroken away;

Fig. 2 is a top plan view of thc plston valve;

Fig. 3 is a side view of Fig. 2;

Fig. 4 is a top plan view of the sustaining disc-of the piston head;

Fig. 5 is a central section of Fig. 4; and

Fig. 6 is a fragmentary sectional view of the pump cylinder showing thevalvularl piston head.

The characters appearing in the description refer to parts shown in thedrawings and designed thereon by corresponding characters.

The invention comprises a pump cylinder 1 arranged between a base 2 andhead 3, the latter having a discharge spout 4:, and the base having achamber 2 and an inlet valve 5. The head 3 has a tubular eXtension 6 atits top, the extension being closed at its upper end by a cap 7. A screwstop 8 extends centrally through the top of the cap into the tubularextension for the purpose hereinafter described. p

i Within the cylinder is a rackbar 9 that extends through the head 3into the extension 6 and has actuated relation with a cranking meanswhich includes a pinion 10 and crank '11, the pinion being containedwithin the head and connected with the crank. rilhe lower end of therack-'bar has a stud 12 that extends vloosely in a sustaining disc 13which together with a leather cup 1li and retaining ring 15 `form thepiston head. An annular expanding member 16 is held by the retainingring in position against the inner wall of the cup in the usual mannerto hold the cup into intimate contact with the adjacent inner wall ofthe pump cylinder. The sustaining disc has a concentric series` ofopenings 17 encompassed on its bottom by an annular valve seat 18, and avalve 19 fixed on the lower end of the stud 12 bears upon the seat whenthe racksbar is raised. The disc 13 has also a central hub 20 throughwhich the stud 12 loosely extends and against the upper end of which therackbar bears when the valve 19 is moved to open position. The lower endof the rack-bar and the valve on the stud are spaced apart suficientlyto admit of limited longitudinal movement kof the stud in the pistonhead so that opening and closing of the valve is directly effected bymovement of the rack,- bar and the movement of the piston head issecondary to that of the valve.

In the operation of the invention the base is screwed into the bungopening of a barrel or otherwise mounted in operating position. Also, asuction pipe (not shown), commonly employed, is connected with the lowerend of the base, through which liquid may be drawn into the pump. Bymanipulating the crank in the usual manner the rack-bar is.reciprocated. As the rack-bar is raised, the valve 19 bears against theseat 18, thus the openings 17in the piston head are closed and thepiston head is raised by the upward movement of the rack-bar through themedium of the valve 19. As the piston head is thus raised the liquid isdrawn past the valve-5in the base into the cylinder, the amountdepending upon the extent of upward movement of the rack-bar which islimited by coming into contact with the screw stop 8. When the rack-baris moved downward, the stud slides in the piston head until the valve 19is `open and the rack-bar bears against the hub and thus directly movesthe piston head downwardly while the valve 19 is held out of contactwith its seat, thus admitting` the passage of the liquid previouslydrawn into the lower end ci the cylinder to pass through the openingsvin the piston head into the upper end of the cylinder, from which itbecomes discharged ward stroke of the piston head.

The downward stroke of the piston head is limited by its sustaining discwhich comes into Contact with the base-2 upon reaching the lower end ofthe cylinder and the valve enters the chamber in the base displacingmore or less of the liquid contentsth-ereoi". By adjusting thestop-screw8 the stroke of the pump and thequantity of liquid dis'- charged by thepump upon each stroke thereof may be regula/ted accordingly. v

. The chamber 2 kin the base is of a size Vthroughthe spout el upon thesubsequent'up- Y' that admits of ready movement `of: the `liquid thereinaround and about the valve 19',

which, especial-ly when .the liqui-dris an eX- ceedingly heavy oil,facilitates operation of the pump. Y f

that I claim is A measuring pump including a cylindrr cal body having adischarge outlet at its top, akbase having a chamber therein with avalve controlled inlet; a reciprocating piston having a valve openingand limited downward movement in the cylinder; and a driving member forthe piston including `a valve operable to close the valveopening thereinand 4actuate the piston in its upward stroke, said valve beingmovable-'into said chamber at the end portion of the downward stroke ofsaiddriving member.. In testimony whereof aiX my signature.

GEORGE U. BRAKE..

